Όταν δούλευα από το σπίτι, συνήθιζα να βάζω ψωμί στη φρυγανιέρα και να τρώω αργά το πρωινό μου.

Δούλευα is the imperfect of δουλεύω.

The imperfect is used for:

• ongoing actions in the past
• repeated or habitual actions in the past
• background situations

Here it gives the background: When I was working from home or Whenever I worked from home.

So όταν δούλευα από το σπίτι does not mean one single completed event. It describes a past situation that was ongoing or repeated.

Συνήθιζα να means I used to or I was in the habit of.

It comes from συνηθίζω = to be used to / to have the habit of.

So:

• συνήθιζα να βάζω = I used to put
• συνήθιζα να τρώω = I used to eat

This makes the idea of habit very explicit. Greek often uses this structure when talking about repeated behavior in the past.

Because the two verbs do different jobs.

• Όταν δούλευα από το σπίτι sets the situation or time frame: when / whenever I was working from home
• συνήθιζα να βάζω... και να τρώω... describes the repeated habit inside that situation

So the sentence is roughly:

Whenever I was working from home, I used to put bread in the toaster and eat my breakfast late/slowly.

Using both is very natural. Greek often combines an imperfect background clause with συνήθιζα να for a habitual action.

Από το σπίτι is the normal way to say from home, especially in the sense of working remotely.

• δουλεύω από το σπίτι = I work from home
• δουλεύω στο σπίτι = I work in/at the house

So στο σπίτι focuses more on location, while από το σπίτι is the more idiomatic choice for remote work.

Because ψωμί is being used as a mass noun, like bread in English.

Greek often leaves out the article with mass nouns when the meaning is general or indefinite:

• βάζω ψωμί στη φρυγανιέρα = I put bread in the toaster

This sounds like some bread / bread slices, not a specific loaf or specific piece already identified.

If you wanted to be more specific, you could say things like:

• το ψωμί = the bread
• φέτες ψωμιού = slices of bread

Στη is the contracted form of:

• σε
  • τη → στη

So:

• στη φρυγανιέρα = into/in the toaster

This contraction is completely standard in modern Greek.

You will see this a lot:

• στο = σε + το
• στη = σε + τη
• στους = σε + τους
• στις = σε + τις

This is about aspect.

• βάζω, τρώω = imperfective aspect
• βάλω, φάω = perfective aspect

After συνήθιζα να, the imperfective is very natural because the speaker is describing a repeated habit, not one single completed action.

So:

• συνήθιζα να βάζω = I used to be putting / I used to put regularly
• συνήθιζα να τρώω = I used to eat regularly

The imperfective fits the idea of routine.

Because Greek normally repeats να when two verbs are coordinated.

So:

• συνήθιζα να βάζω ψωμί στη φρυγανιέρα και να τρώω αργά το πρωινό μου

This is more natural and clearer than using να only once.

In English we can say I used to put bread in the toaster and eat breakfast, but Greek usually prefers:

• να βάζω ... και να τρώω

Yes. In a sentence like this, όταν can be understood as either:

• when
• whenever

Because the verbs are in past habitual forms, the meaning is often close to whenever:

Whenever I worked from home, I used to...

So even though όταν literally means when, the broader sense here is habitual.

Αργά can mean either:

• late
• slowly

Context decides which one is intended.

So να τρώω αργά το πρωινό μου could mean:

• to eat my breakfast late
• to eat my breakfast slowly

If the meaning shown to you is already one of those, then that is the intended reading. But by itself, the Greek wording can allow both.

Because with possessive pronouns in modern Greek, the most common pattern is:

• article + noun + possessive clitic

So:

• το πρωινό μου = my breakfast
• το σπίτι μου = my house
• ο φίλος μου = my friend

This is the normal order.

A form like μου το πρωινό would not be the regular way to say my breakfast here.

No. Greek usually leaves subject pronouns out because the verb ending already shows the person.

Here:

• δούλευα
• συνήθιζα
• βάζω
• τρώω

all clearly refer to I in context.

You could add εγώ only for emphasis or contrast, for example if you wanted to stress I, not someone else.

Η φρυγανιέρα is the normal word for a toaster.

It comes from φρυγανιά, which is toast / rusk.

In everyday Greek:

• φρυγανιέρα = toaster
• τοστιέρα usually means a sandwich toaster / toast maker, not the same thing as a regular pop-up toaster

So in this sentence, στη φρυγανιέρα specifically suggests putting bread into a toaster.